<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script src="/js/vue.js"></script>
    <div id="app">
        <p>中国古典十大名曲为:{{array | join}}</p>
        <p>中国古典十大名曲为:{{array | join('、')}}</p>
        <p>中国古典十大名曲为:{{array | join('《','》')}}</p>
    </div>
</body>
    <script>
        var app = new Vue({
            el: "#app",
            data: {
                array: ['高山流水', '梅花三弄', '夕阳箫鼓', '汉宫秋月', '阳春白雪', '渔樵问答',
                    '胡笳十八拍', '广陵散', '平沙落雁', '十面埋伏']
            },
            filters:{
                join:function(val,...marks){
                    var length = marks.length
                    if(length == 2){
                        return val.map((v)=>{
                            return marks[0]+v+marks[1]
                        }).join('')
                    } else if(length == 1){
                        return val.join(marks[0])
                    } else{
                        return val.join(',')
                    }
                }
            }
        });
    </script>
</html>